Rosika, a girl from Genoa, fled her innkeeper stepfather after he tried to abuse her. She finds refuge - and a job as well - in a traveling circus. Cherubini, the owner of the big top, falls in love with the lovely young woman and makes her the star of the show 'Light Cavalry'. But unfortunately for him Rosika's heart beats for Geza, the stable boy.
A concert pianist, the romantic idol of many women, is seduced away from his wife. The seductress's husband takes in the pianist's wife, and all four pretend to be happy with the new arrangement.
Critics of the time called "Milak, der Grönlandjäger" the German answer to Robert Flaherty’s "Nanook of the North" (1922). Filmed largely on location in Greenland and Norway’s Spitsbergen archipelago, the film combines impressive landscape footage with ethnographic observation.